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Verified answer
Luas lingkaran = phi.r^2 t.= 22/7 (14)^2
= 22/7 x 14 x 14
= 22 x 14 x 2
= 616
Yang diarsir = 3/4 x 616
= 462
kalau bagian yang diarsir :
L 3/4 = 3/4 π × r × r
L 3/4 = 3/4 × 22/7 × 14 × 14
L 3/4 = 12.936/28
L 3/4 = 462 cm^2
kalau bagian yang tidak diarsir = 1-3/4 = 1/4 bagian :
L 1/4 = 1/4 π × r × r
L 1/4 = 1/4 × 22/7 × 14 × 14
L 1/4 = 4312/28
L 1/4 = 154 cm^2
Semoga membantu yaa:)